 M-zines are a class of two-dimensional, 2D, materials composed of transition metals such as titanium, tungsten, molybdenum and hafnium. These materials possess unique physical and chemical properties which make them promising candidates for a variety of applications. Despite their potential, however, the low surface area and poor processability of M-zine nanosheets has limited their practical use. Recent advances in the construction of M-zine assemblies from 2D to 3D structures at both the macro and micro levels have been made, with the aim of improving accessibility and processability. This review discusses the mechanisms behind these assemblies and their potential applications in energy conversion and storage, electromagnetic interference shielding and absorption, and other areas. This article was authored by Zhitan Wu, Tong Xinxiang, Yaikian Deng, and others.